1 //=- Mips64r6InstrInfo.td - Mips64r6 Instruction Information -*- tablegen -*-=//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file describes Mips64r6 instructions.
11 //===----------------------------------------------------------------------===//
13 // Notes about removals/changes from MIPS32r6:
14 // Reencoded: dclo, dclz
16 //===----------------------------------------------------------------------===//
18 // Instruction Encodings
20 //===----------------------------------------------------------------------===//
22 class DALIGN_ENC : SPECIAL3_DALIGN_FM<OPCODE6_DALIGN>;
23 class DAUI_ENC : DAUI_FM;
24 class DAHI_ENC : REGIMM_FM<OPCODE5_DAHI>;
25 class DATI_ENC : REGIMM_FM<OPCODE5_DATI>;
26 class DBITSWAP_ENC : SPECIAL3_2R_FM<OPCODE6_DBITSWAP>;
27 class DCLO_R6_ENC : SPECIAL_2R_FM<OPCODE6_DCLO>;
28 class DCLZ_R6_ENC : SPECIAL_2R_FM<OPCODE6_DCLZ>;
29 class DDIV_ENC : SPECIAL_3R_FM<0b00010, 0b011110>;
30 class DDIVU_ENC : SPECIAL_3R_FM<0b00010, 0b011111>;
31 class DLSA_R6_ENC : SPECIAL_LSA_FM<OPCODE6_DLSA>;
32 class DMOD_ENC : SPECIAL_3R_FM<0b00011, 0b011110>;
33 class DMODU_ENC : SPECIAL_3R_FM<0b00011, 0b011111>;
34 class DMUH_ENC : SPECIAL_3R_FM<0b00011, 0b011100>;
35 class DMUHU_ENC : SPECIAL_3R_FM<0b00011, 0b011101>;
36 class DMUL_R6_ENC : SPECIAL_3R_FM<0b00010, 0b011100>;
37 class DMULU_ENC : SPECIAL_3R_FM<0b00010, 0b011101>;
38 class LDPC_ENC : PCREL18_FM<OPCODE3_LDPC>;
39 class LLD_R6_ENC : SPECIAL3_LL_SC_FM<OPCODE6_LLD>;
40 class SCD_R6_ENC : SPECIAL3_LL_SC_FM<OPCODE6_SCD>;
41 class CRC32D_ENC : SPECIAL3_2R_SZ_CRC<3,0>;
42 class CRC32CD_ENC : SPECIAL3_2R_SZ_CRC<3,1>;
44 //===----------------------------------------------------------------------===//
46 // Instruction Descriptions
48 //===----------------------------------------------------------------------===//
50 class AHI_ATI_DESC_BASE<string instr_asm, RegisterOperand GPROpnd, InstrItinClass itin> {
51 dag OutOperandList = (outs GPROpnd:$rs);
52 dag InOperandList = (ins GPROpnd:$rt, uimm16_altrelaxed:$imm);
53 string AsmString = !strconcat(instr_asm, "\t$rs, $rt, $imm");
54 string Constraints = "$rs = $rt";
55 InstrItinClass Itinerary = itin;
58 class DALIGN_DESC : ALIGN_DESC_BASE<"dalign", GPR64Opnd, uimm3, II_DALIGN>;
59 class DAHI_DESC : AHI_ATI_DESC_BASE<"dahi", GPR64Opnd, II_DAHI>;
60 class DATI_DESC : AHI_ATI_DESC_BASE<"dati", GPR64Opnd, II_DATI>;
61 class DAUI_DESC : AUI_DESC_BASE<"daui", GPR64Opnd, II_DAUI>;
62 class DBITSWAP_DESC : BITSWAP_DESC_BASE<"dbitswap", GPR64Opnd, II_DBITSWAP>;
63 class DCLO_R6_DESC : CLO_R6_DESC_BASE<"dclo", GPR64Opnd, II_DCLO>;
64 class DCLZ_R6_DESC : CLZ_R6_DESC_BASE<"dclz", GPR64Opnd, II_DCLZ>;
65 class DDIV_DESC : DIVMOD_DESC_BASE<"ddiv", GPR64Opnd, II_DDIV, sdiv>;
66 class DDIVU_DESC : DIVMOD_DESC_BASE<"ddivu", GPR64Opnd, II_DDIVU, udiv>;
67 class DLSA_R6_DESC : LSA_R6_DESC_BASE<"dlsa", GPR64Opnd, uimm2_plus1, II_DLSA>;
68 class DMOD_DESC : DIVMOD_DESC_BASE<"dmod", GPR64Opnd, II_DMOD, srem>;
69 class DMODU_DESC : DIVMOD_DESC_BASE<"dmodu", GPR64Opnd, II_DMODU, urem>;
70 class DMUH_DESC : MUL_R6_DESC_BASE<"dmuh", GPR64Opnd, II_DMUH, mulhs>;
71 class DMUHU_DESC : MUL_R6_DESC_BASE<"dmuhu", GPR64Opnd, II_DMUHU, mulhu>;
72 class DMUL_R6_DESC : MUL_R6_DESC_BASE<"dmul", GPR64Opnd, II_DMUL, mul>;
73 class DMULU_DESC : MUL_R6_DESC_BASE<"dmulu", GPR64Opnd, II_DMUL>;
74 class LDPC_DESC : PCREL_DESC_BASE<"ldpc", GPR64Opnd, simm18_lsl3, II_LDPC>;
75 class LLD_R6_DESC : LL_R6_DESC_BASE<"lld", GPR64Opnd, mem_simmptr, II_LLD>;
76 class SCD_R6_DESC : SC_R6_DESC_BASE<"scd", GPR64Opnd, II_SCD>;
77 class SELEQZ64_DESC : SELEQNE_Z_DESC_BASE<"seleqz", GPR64Opnd>;
78 class SELNEZ64_DESC : SELEQNE_Z_DESC_BASE<"selnez", GPR64Opnd>;
80 class BGEC64_DESC : CMP_BC_DESC_BASE<"bgec", brtarget, GPR64Opnd>;
81 class BGEUC64_DESC : CMP_BC_DESC_BASE<"bgeuc", brtarget, GPR64Opnd>;
82 class BEQC64_DESC : CMP_BC_DESC_BASE<"beqc", brtarget, GPR64Opnd>;
83 class BNEC64_DESC : CMP_BC_DESC_BASE<"bnec", brtarget, GPR64Opnd>;
84 class BLTC64_DESC : CMP_BC_DESC_BASE<"bltc", brtarget, GPR64Opnd>;
85 class BLTUC64_DESC : CMP_BC_DESC_BASE<"bltuc", brtarget, GPR64Opnd>;
86 class BLTZC64_DESC : CMP_CBR_RT_Z_DESC_BASE<"bltzc", brtarget, GPR64Opnd>;
87 class BGEZC64_DESC : CMP_CBR_RT_Z_DESC_BASE<"bgezc", brtarget, GPR64Opnd>;
88 class BLEZC64_DESC : CMP_CBR_RT_Z_DESC_BASE<"blezc", brtarget, GPR64Opnd>;
89 class BGTZC64_DESC : CMP_CBR_RT_Z_DESC_BASE<"bgtzc", brtarget, GPR64Opnd>;
90 class BEQZC64_DESC : CMP_CBR_EQNE_Z_DESC_BASE<"beqzc", brtarget21, GPR64Opnd>;
91 class BNEZC64_DESC : CMP_CBR_EQNE_Z_DESC_BASE<"bnezc", brtarget21, GPR64Opnd>;
93 class JIALC64_DESC : JMP_IDX_COMPACT_DESC_BASE<"jialc", calloffset16,
94 GPR64Opnd, II_JIALC> {
96 list<Register> Defs = [RA];
99 class JIC64_DESC : JMP_IDX_COMPACT_DESC_BASE<"jic", jmpoffset16, GPR64Opnd,
102 bit isTerminator = 1;
103 list<Register> Defs = [AT];
106 class LL64_R6_DESC : LL_R6_DESC_BASE<"ll", GPR32Opnd, mem_simm9, II_LL>;
107 class SC64_R6_DESC : SC_R6_DESC_BASE<"sc", GPR32Opnd, II_SC>;
109 class JR_HB64_R6_DESC : JR_HB_DESC_BASE<"jr.hb", GPR64Opnd> {
111 bit isIndirectBranch = 1;
112 bit hasDelaySlot = 1;
116 InstrItinClass Itinerary = II_JR_HB;
119 class CRC32D_DESC : CRC_DESC_BASE<"crc32d", GPR32Opnd, II_CRC32D>;
120 class CRC32CD_DESC : CRC_DESC_BASE<"crc32cd", GPR32Opnd, II_CRC32CD>;
122 //===----------------------------------------------------------------------===//
124 // Instruction Definitions
126 //===----------------------------------------------------------------------===//
128 let AdditionalPredicates = [NotInMicroMips] in {
129 let DecoderMethod = "DecodeDAHIDATI" in {
130 def DATI : DATI_ENC, DATI_DESC, ISA_MIPS64R6;
131 def DAHI : DAHI_ENC, DAHI_DESC, ISA_MIPS64R6;
133 def DAUI : DAUI_ENC, DAUI_DESC, ISA_MIPS64R6;
134 def DALIGN : DALIGN_ENC, DALIGN_DESC, ISA_MIPS64R6;
135 def DBITSWAP : DBITSWAP_ENC, DBITSWAP_DESC, ISA_MIPS64R6;
136 def DCLO_R6 : DCLO_R6_ENC, DCLO_R6_DESC, ISA_MIPS64R6;
137 def DCLZ_R6 : DCLZ_R6_ENC, DCLZ_R6_DESC, ISA_MIPS64R6;
138 def DDIV : DDIV_ENC, DDIV_DESC, ISA_MIPS64R6;
139 def DDIVU : DDIVU_ENC, DDIVU_DESC, ISA_MIPS64R6;
140 def DMOD : DMOD_ENC, DMOD_DESC, ISA_MIPS64R6;
141 def DMODU : DMODU_ENC, DMODU_DESC, ISA_MIPS64R6;
142 def DLSA_R6 : DLSA_R6_ENC, DLSA_R6_DESC, ISA_MIPS64R6;
143 def DMUH: DMUH_ENC, DMUH_DESC, ISA_MIPS64R6;
144 def DMUHU: DMUHU_ENC, DMUHU_DESC, ISA_MIPS64R6;
145 def DMUL_R6: DMUL_R6_ENC, DMUL_R6_DESC, ISA_MIPS64R6;
146 def DMULU: DMULU_ENC, DMULU_DESC, ISA_MIPS64R6;
147 def LLD_R6 : LLD_R6_ENC, LLD_R6_DESC, ISA_MIPS64R6;
149 def LDPC: LDPC_ENC, LDPC_DESC, ISA_MIPS64R6;
150 def SCD_R6 : SCD_R6_ENC, SCD_R6_DESC, ISA_MIPS32R6;
151 let DecoderNamespace = "Mips32r6_64r6_GP64" in {
152 def SELEQZ64 : SELEQZ_ENC, SELEQZ64_DESC, ISA_MIPS32R6, GPR_64;
153 def SELNEZ64 : SELNEZ_ENC, SELNEZ64_DESC, ISA_MIPS32R6, GPR_64;
154 def JR_HB64_R6 : JR_HB_R6_ENC, JR_HB64_R6_DESC, ISA_MIPS32R6;
156 let AdditionalPredicates = [NotInMicroMips],
157 DecoderNamespace = "Mips32r6_64r6_PTR64" in {
158 def LL64_R6 : LL_R6_ENC, LL64_R6_DESC, PTR_64, ISA_MIPS64R6;
159 def SC64_R6 : SC_R6_ENC, SC64_R6_DESC, PTR_64, ISA_MIPS64R6;
162 let DecoderNamespace = "Mips32r6_64r6_GP64" in {
163 // Jump and Branch Instructions
164 def JIALC64 : JIALC_ENC, JIALC64_DESC, ISA_MIPS64R6, GPR_64;
165 def JIC64 : JIC_ENC, JIC64_DESC, ISA_MIPS64R6, GPR_64;
167 def BEQC64 : BEQC_ENC, BEQC64_DESC, ISA_MIPS64R6, GPR_64;
168 def BEQZC64 : BEQZC_ENC, BEQZC64_DESC, ISA_MIPS64R6, GPR_64;
169 def BGEC64 : BGEC_ENC, BGEC64_DESC, ISA_MIPS64R6, GPR_64;
170 def BGEUC64 : BGEUC_ENC, BGEUC64_DESC, ISA_MIPS64R6, GPR_64;
171 def BGTZC64 : BGTZC_ENC, BGTZC64_DESC, ISA_MIPS64R6, GPR_64;
172 def BLEZC64 : BLEZC_ENC, BLEZC64_DESC, ISA_MIPS64R6, GPR_64;
173 def BLTC64 : BLTC_ENC, BLTC64_DESC, ISA_MIPS64R6, GPR_64;
174 def BLTUC64 : BLTUC_ENC, BLTUC64_DESC, ISA_MIPS64R6, GPR_64;
175 def BNEC64 : BNEC_ENC, BNEC64_DESC, ISA_MIPS64R6, GPR_64;
176 def BNEZC64 : BNEZC_ENC, BNEZC64_DESC, ISA_MIPS64R6, GPR_64;
178 let DecoderNamespace = "Mips32r6_64r6_BranchZero" in {
179 def BLTZC64 : BLTZC_ENC, BLTZC64_DESC, ISA_MIPS64R6, GPR_64;
180 def BGEZC64 : BGEZC_ENC, BGEZC64_DESC, ISA_MIPS64R6, GPR_64;
182 let AdditionalPredicates = [NotInMicroMips] in {
183 def CRC32D : R6MMR6Rel, CRC32D_ENC, CRC32D_DESC, ISA_MIPS64R6, ASE_CRC;
184 def CRC32CD : R6MMR6Rel, CRC32CD_ENC, CRC32CD_DESC, ISA_MIPS64R6, ASE_CRC;
187 //===----------------------------------------------------------------------===//
189 // Instruction Aliases
191 //===----------------------------------------------------------------------===//
193 def : MipsInstAlias<"jr $rs", (JALR64 ZERO_64, GPR64Opnd:$rs), 1>, ISA_MIPS64R6;
195 def : MipsInstAlias<"jrc $rs", (JIC64 GPR64Opnd:$rs, 0), 1>, ISA_MIPS64R6;
197 def : MipsInstAlias<"jalrc $rs", (JIALC64 GPR64Opnd:$rs, 0), 1>, ISA_MIPS64R6;
198 //===----------------------------------------------------------------------===//
200 // Patterns and Pseudo Instructions
202 //===----------------------------------------------------------------------===//
205 def : MipsPat<(select i64:$cond, i64:$t, i64:$f),
206 (OR64 (SELNEZ64 i64:$t, i64:$cond),
207 (SELEQZ64 i64:$f, i64:$cond))>,
209 def : MipsPat<(select (i32 (seteq i64:$cond, immz)), i64:$t, i64:$f),
210 (OR64 (SELEQZ64 i64:$t, i64:$cond),
211 (SELNEZ64 i64:$f, i64:$cond))>,
213 def : MipsPat<(select (i32 (setne i64:$cond, immz)), i64:$t, i64:$f),
214 (OR64 (SELNEZ64 i64:$t, i64:$cond),
215 (SELEQZ64 i64:$f, i64:$cond))>,
217 def : MipsPat<(select (i32 (seteq i64:$cond, immZExt16_64:$imm)), i64:$t, i64:$f),
218 (OR64 (SELEQZ64 i64:$t, (XORi64 i64:$cond, immZExt16_64:$imm)),
219 (SELNEZ64 i64:$f, (XORi64 i64:$cond, immZExt16_64:$imm)))>,
221 def : MipsPat<(select (i32 (setne i64:$cond, immZExt16_64:$imm)), i64:$t, i64:$f),
222 (OR64 (SELNEZ64 i64:$t, (XORi64 i64:$cond, immZExt16_64:$imm)),
223 (SELEQZ64 i64:$f, (XORi64 i64:$cond, immZExt16_64:$imm)))>,
226 (select (i32 (setgt i64:$cond, immSExt16Plus1:$imm)), i64:$t, i64:$f),
227 (OR64 (SELEQZ64 i64:$t,
228 (SUBREG_TO_REG (i64 0), (SLTi64 i64:$cond, (Plus1 imm:$imm)),
231 (SUBREG_TO_REG (i64 0), (SLTi64 i64:$cond, (Plus1 imm:$imm)),
235 (select (i32 (setugt i64:$cond, immSExt16Plus1:$imm)), i64:$t, i64:$f),
236 (OR64 (SELEQZ64 i64:$t,
237 (SUBREG_TO_REG (i64 0), (SLTiu64 i64:$cond, (Plus1 imm:$imm)),
240 (SUBREG_TO_REG (i64 0), (SLTiu64 i64:$cond, (Plus1 imm:$imm)),
244 def : MipsPat<(select (i32 (setne i64:$cond, immz)), i64:$t, immz),
245 (SELNEZ64 i64:$t, i64:$cond)>, ISA_MIPS64R6;
246 def : MipsPat<(select (i32 (seteq i64:$cond, immz)), i64:$t, immz),
247 (SELEQZ64 i64:$t, i64:$cond)>, ISA_MIPS64R6;
248 def : MipsPat<(select (i32 (setne i64:$cond, immz)), immz, i64:$f),
249 (SELEQZ64 i64:$f, i64:$cond)>, ISA_MIPS64R6;
250 def : MipsPat<(select (i32 (seteq i64:$cond, immz)), immz, i64:$f),
251 (SELNEZ64 i64:$f, i64:$cond)>, ISA_MIPS64R6;
253 // i64 selects from an i32 comparison
254 // One complicating factor here is that bits 32-63 of an i32 are undefined.
255 // FIXME: Ideally, setcc would always produce an i64 on MIPS64 targets.
256 // This would allow us to remove the sign-extensions here.
257 def : MipsPat<(select i32:$cond, i64:$t, i64:$f),
258 (OR64 (SELNEZ64 i64:$t, (SLL64_32 i32:$cond)),
259 (SELEQZ64 i64:$f, (SLL64_32 i32:$cond)))>,
261 def : MipsPat<(select (i32 (seteq i32:$cond, immz)), i64:$t, i64:$f),
262 (OR64 (SELEQZ64 i64:$t, (SLL64_32 i32:$cond)),
263 (SELNEZ64 i64:$f, (SLL64_32 i32:$cond)))>,
265 def : MipsPat<(select (i32 (setne i32:$cond, immz)), i64:$t, i64:$f),
266 (OR64 (SELNEZ64 i64:$t, (SLL64_32 i32:$cond)),
267 (SELEQZ64 i64:$f, (SLL64_32 i32:$cond)))>,
269 def : MipsPat<(select (i32 (seteq i32:$cond, immZExt16:$imm)), i64:$t, i64:$f),
270 (OR64 (SELEQZ64 i64:$t, (SLL64_32 (XORi i32:$cond,
272 (SELNEZ64 i64:$f, (SLL64_32 (XORi i32:$cond,
275 def : MipsPat<(select (i32 (setne i32:$cond, immZExt16:$imm)), i64:$t, i64:$f),
276 (OR64 (SELNEZ64 i64:$t, (SLL64_32 (XORi i32:$cond,
278 (SELEQZ64 i64:$f, (SLL64_32 (XORi i32:$cond,
282 def : MipsPat<(select i32:$cond, i64:$t, immz),
283 (SELNEZ64 i64:$t, (SLL64_32 i32:$cond))>,
285 def : MipsPat<(select (i32 (setne i32:$cond, immz)), i64:$t, immz),
286 (SELNEZ64 i64:$t, (SLL64_32 i32:$cond))>,
288 def : MipsPat<(select (i32 (seteq i32:$cond, immz)), i64:$t, immz),
289 (SELEQZ64 i64:$t, (SLL64_32 i32:$cond))>,
291 def : MipsPat<(select i32:$cond, immz, i64:$f),
292 (SELEQZ64 i64:$f, (SLL64_32 i32:$cond))>,
294 def : MipsPat<(select (i32 (setne i32:$cond, immz)), immz, i64:$f),
295 (SELEQZ64 i64:$f, (SLL64_32 i32:$cond))>,
297 def : MipsPat<(select (i32 (seteq i32:$cond, immz)), immz, i64:$f),
298 (SELNEZ64 i64:$f, (SLL64_32 i32:$cond))>,
301 // Patterns used for matching away redundant sign extensions.
302 // MIPS32 arithmetic instructions sign extend their result implicitly.
303 def : MipsPat<(i64 (sext (i32 (mul GPR32:$src, GPR32:$src2)))),
304 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
305 (MUL_R6 GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
306 def : MipsPat<(i64 (sext (i32 (sdiv GPR32:$src, GPR32:$src2)))),
307 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
308 (DIV GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
309 def : MipsPat<(i64 (sext (i32 (udiv GPR32:$src, GPR32:$src2)))),
310 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
311 (DIVU GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
312 def : MipsPat<(i64 (sext (i32 (srem GPR32:$src, GPR32:$src2)))),
313 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
314 (MOD GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
315 def : MipsPat<(i64 (sext (i32 (urem GPR32:$src, GPR32:$src2)))),
316 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
317 (MODU GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
319 // Pseudo instructions
321 let AdditionalPredicates = [NotInMips16Mode, NotInMicroMips,
322 NoIndirectJumpGuards] in {
323 def TAILCALL64R6REG : TailCallRegR6<JALR64, ZERO_64, GPR64Opnd>, ISA_MIPS64R6;
324 def PseudoIndirectBranch64R6 : PseudoIndirectBranchBaseR6<JALR64, ZERO_64,
329 let AdditionalPredicates = [NotInMips16Mode, NotInMicroMips,
330 UseIndirectJumpsHazard] in {
331 def TAILCALLHB64R6REG : TailCallReg<JR_HB64_R6, GPR64Opnd>,
333 def PseudoIndrectHazardBranch64R6 : PseudoIndirectBranchBase<JR_HB64_R6,